VARIATION STUDIES IN BROME GRASS 
5 
Manifestly, no one grass or combination of grasses is best adapted 
for all of these conditions. It so happened that among the grasses giv¬ 
ing considerable promise for pasture purposes, especially in! *the 
higher altitudes, both under the dry land and irrigated conditions, 
what is commonly known as the awnless brome grass (Bromus iner- 
mis) was one of the most promising. When the experiment had gone 
far enough to demonstrate the advisability of pushing this grass for 
certain sections, studies were commenced to see if there were differ¬ 
ent types or strains of Bromus inermis which might have peculiar 
advantages for specific definite conditions. With this idea in view, 
seed was obtained from a number of different sources and planted in 
our grass gardens upon the experimental grounds at Fort Collins. 
The particular line of studies here reported are the outgowth of a 
portion of the studies thus started. 
It was early observed that we possessed a large number of 
Plate No. 4. 
strains and apparently different types in the plantings. These strains 
were then selected and seed from each strain was planted in rows 
three feet apart. The plantings in the rows themselves were made 
two feet apart. After the young plants had started they were thinned 
to one plant in the hill. This was done in order to have each hill rep- 
